Acceso PremiumDesbloquea todo el potencial de CalcWood PRO
Lleva tu trabajo en el taller al siguiente nivel. Obtén planes detallados, un archivo de proyectos personal y funciones expertas que te ahorrarán horas de tiempo y mucho material arruinado.
12 razones para actualizar a PRO
1
Todas las calculadoras en una
Una suscripción desbloquea todo el ecosistema CalcWood. Sin comprar módulos individuales.
2
Planes PDF detallados sin esperas
Obtienes documentación de producción completa, dimensiones clave, medidas exactas y planes de perforación. Como usuario PRO, descargas el PDF al instante sin introducir el e-mail ni esperar la entrega.
3
Archivo de proyectos personal
Guarda cualquier cálculo con un solo clic. Nunca pierdas las dimensiones de un proyecto que preparaste hace un mes.
4
Historial de cálculo automático
¿Olvidaste guardar tu proyecto manualmente? No hay problema. El sistema recuerda tus últimos 100 cálculos en segundo plano. Siempre puedes volver a lo que estabas calculando ayer.
5
Configuraciones expertas
Desbloquea parámetros avanzados en todas las herramientas. Desde la maximización del espacio hasta configuraciones detalladas para planes de corte perfectos.
6
Sincronización en la nube
Ya sea que estés en el taller con un móvil o en la oficina en un monitor grande, tus datos siempre están sincronizados.
7
Planes de corte (Opticutter)
Acceso a la optimización avanzada de corte de tableros con alto rendimiento de material y deducción de cantos ABS.
8
Códigos QR para retorno rápido
Escanea el código QR del PDF impreso y tu teléfono te devolverá instantáneamente a la configuración exacta.
9
Plantillas de impresión 1:1
Obtén plantillas de impresión precisas para ángulos complejos (por ejemplo, en escaleras). Solo tienes que imprimir, pegar en el contrachapado y cortar directamente.
10
Acceso rápido sin contraseñas
Sin registros tediosos ni contraseñas olvidadas. El sistema funciona con una clave de licencia única. La introduces y trabajas al instante.
11
Actualizaciones periódicas y novedades
Tu licencia no se aplica solo al estado actual. Obtienes acceso automático a todas las calculadoras futuras y nuevas funciones.
12
Minimización de errores y ahorro
Un solo error en papel puede costarte más que una licencia anual. CalcWood maneja las matemáticas complejas y reduce el riesgo de errores costosos.
Límites de protección del servidor
Para garantizar calculadoras ultrarrápidas para todos y proteger el servidor de bots, aplico límites de cálculo. Con una licencia PRO, obtienes un aumento masivo en estos límites para un trabajo ininterrumpido.
Versión GRATUITA
$0
Funciones básicas para uso ocasional
- Cálculos básicos
- Sin configuraciones expertas
- Sin resultados avanzados
- Sin guardar cálculos
- Sin búsqueda en el archivo
- Sin historial de cálculos
- Sin PDFs detallados y plantillas
- Sin descarga instantánea de PDF
- 3 cálculos / min
- 15 cálculos / hora
- 30 cálculos / día
Tu plan actual
Versión PRO
desde $14.90
Para los proyectos más exigentes
- Cálculos avanzados
- Configuraciones expertas
- Resultados avanzados
- Guardar cálculos propios
- Búsqueda rápida en el archivo
- Historial de los últimos 100 cálculos
- PDFs detallados y plantillas
- Descarga instantánea de PDF sin introducir e-mail
- 20 cálculos / min
- 200 cálculos / hora
- 1000 cálculos / día
Planes PDF detallados sin compromisos
En la versión gratuita obtienes una base útil, pero carece de otros valores importantes para la construcción real. Con una licencia PRO, se desbloquean todas las dimensiones expertas: cada medida, punto de perforación y voladizo se calcula con precisión.
Para proyectos complejos (por ejemplo, cajones), el PDF también incluye planes de corte profesionales con un rendimiento de material de hasta el 95%. Solo tienes que imprimirlo y empezar a cortar.
Cuenta personal, proyectos guardados e historial
Se acabaron los papeles perdidos. Puedes guardar todos tus cálculos de forma segura en tu cuenta personal entre los proyectos guardados. Puedes nombrarlos, filtrarlos y volver a ellos en cualquier momento.
¿Olvidaste guardar un cálculo? No pasa nada. El sistema recuerda tus últimos 100 cálculos en segundo plano. Solo abre el historial, carga el trabajo de ayer y continúa. Ya sea que estés en el taller con un móvil o en la oficina en un monitor, tus datos siempre están a mano.
Configuraciones expertas para profesionales
Obtén control total sobre cada milímetro. La versión PRO desbloquea parámetros avanzados que se adaptan a tus flujos de trabajo específicos y hábitos de taller.
En los cajones, puedes ajustar fácilmente las alturas individuales de cada caja, las holguras exactas, los grosores de los materiales o el tipo de frente (superpuesto/insertado). Incluso puedes maximizar el espacio de almacenamiento utilizando el espacio muerto debajo del cajón, o controlar la dirección de las vetas y el grosor de los cantos ABS para un plan de corte perfecto.
Por otro lado, en paredes de listones y escaleras apreciarás la configuración avanzada de simetría de bordes, la calibración precisa de los escalones y las cotas detalladas para cada corte. El cálculo simplemente se adapta a ti, no tú a él.
Planes de corte y plantillas 1:1
En materiales de tablero (por ejemplo, cajones), obtienes acceso al Opticutter integrado. La calculadora genera la distribución óptima de las piezas en el formato del tablero (incluyendo los cantos ABS) y te ahorra mucha melamina cara.
En otros proyectos (por ejemplo, escaleras), obtienes plantillas de impresión precisas a escala 1:1. Solo tienes que calcar el papel directamente sobre el material, o pegarlo en un trozo de contrachapado para hacer una plantilla sólida para un trabajo rápido. Sin dibujos complicados con transportador.
Frequently Asked Questions
General Questions
Will there be a mobile app for Android or iOS?
There won't be a downloadable mobile app. CalcWood performs complex background operations (Opticutter cut lists, PDF generation, license verification) that require a server and internet connection. It simply wouldn't work as an offline app. However, I have perfectly optimized the entire website for mobile devices. Plus, you don't need to install any bloatware, and you always have the latest version instantly.
💡 My tip: Open the website in your mobile browser, open the menu, and select Add to Home Screen. It creates an icon on your screen and works just like a native app.
💡 My tip: Open the website in your mobile browser, open the menu, and select Add to Home Screen. It creates an icon on your screen and works just like a native app.
How do I know how to use the calculators correctly?
If you are unsure about any input fields, look for the small yellow question marks next to them. These are helpful tooltips. Just hover your mouse over the question mark (or tap it on mobile) to see a detailed explanation of what the specific value means. I highly recommend checking these tooltips before using the calculator.
How do I print the PDF template in 1:1 scale?
When printing from your PDF viewer, make sure to select "Actual Size" or "Custom Scale: 100%". Do not use "Fit to Page" or "Shrink to Fit", as this will distort the dimensions.
Licencia PRO, cuenta y pagos
What is included in the PRO license?
The PRO license unlocks all current calculators and other features I continuously add to CalcWood. You get expert settings, detailed PDF plans, and the ability to save projects to your personal archive. You can find all details on the Premium Access page.
¿Cómo funciona el inicio de sesión y cuánto tiempo me recuerda el navegador?
Después de iniciar sesión con tu clave de licencia, ese navegador te recordará durante un máximo de 365 días desde tu última visita. Solo tendrás que volver a iniciar sesión si cierras la sesión manualmente, borras las cookies, caduca tu licencia o utilizas otro navegador o dispositivo. En el modo privado o de incógnito, el inicio de sesión se elimina automáticamente al cerrar todas las ventanas privadas.
¿Qué debería probar antes de comprar una licencia PRO?
Primero realiza varios cálculos gratuitos y comprueba que el sistema de entrada y los resultados se adaptan a ti. Revisa también los Ajustes expertos bloqueados. Incluso sin licencia puedes ver sus nombres, las opciones disponibles y las explicaciones de ayuda. Así sabrás exactamente qué incluye PRO antes de comprar. Te recomiendo adquirir la licencia solo después de comprobarlo.
How many devices can I use my PRO account on, and can I share it?
The PRO license is intended for one user. You can keep your account active on up to 5 of your own devices, such as your phone, a workshop tablet, and your home computer. Sharing the license with friends or using it for multiple people in a company is not allowed.
How do payments work?
The subscription is billed on a recurring monthly or yearly basis, depending on the selected plan. You can stop future payments at any time through My Account using the "MANAGE SUBSCRIPTION AND INVOICES" button.
Can I cancel my subscription?
Yes. You can cancel your subscription at any time through My Account. Your PRO access remains active until the end of the period you have already paid for.
¿Qué ocurre con mi historial y mis proyectos guardados cuando termina el acceso PRO?
El historial de cálculos y los proyectos guardados no se eliminan automáticamente cuando termina el acceso PRO. Permanecen vinculados al correo electrónico utilizado en la compra. Si vuelves a activar PRO más adelante con el mismo correo electrónico, tus datos anteriores volverán a estar disponibles después de iniciar sesión. Los datos vinculados a otro correo electrónico no se transfieren automáticamente.
Will I get an invoice?
Yes. Open My Account and select "MANAGE SUBSCRIPTION AND INVOICES". This opens the secure Stripe customer portal, where you can download the relevant payment documents.
Can I get a refund if I am not satisfied?
Because this is a digital service that unlocks immediately after purchase, please try the free features first and make sure the calculators suit your workflow. If you encounter a serious technical problem, contact me and I will handle it fairly based on the specific situation.
Heat Loss Calculator
How does the calculator compute savings and ROI?
The calculator compares the heat loss of the specified structure with and without added insulation. It multiplies the difference by your energy price to show the annual savings. The Return on Investment (ROI) is calculated by dividing the total insulation cost by these annual savings. This gives you an estimate of how many years it will take for the investment to pay off.
Why is "Dew Point" mentioned and what is it good for?
Dew point is the temperature at which air moisture condenses into water. If the structure is designed poorly, moisture can condense in sensitive areas and eventually cause mold or material degradation. Properly designed external insulation helps move the risk of condensation outside the sensitive parts of the structure.
What do U and R values mean in insulation?
Thermal transmittance (U-value) indicates how much heat escapes through the structure. The lower the U-value, the better the insulation. Thermal resistance (R-value) works the opposite way – the higher the R-value, the better the structure resists heat loss.
Can I use the calculator results for official energy certificates or subsidies?
No. This calculator is for a quick estimate and material comparison (it calculates heat transfer through an ideal structure). In a real house, windows, roof, ventilation, and thermal bridges play a huge role. For official certificates and subsidies, always contact a certified engineer.
Drawer Calculator
What is CalcWood Master and what does it check in the drawer calculator?
CalcWood Master checks the specific calculated result using fixed rules linked to the entered dimensions and selected hardware. It can highlight drawers that are too wide, unsuitable slide load capacity, or unused space below the drawers, and recommend what to adjust or verify before manufacturing. It is not artificial intelligence and does not replace the final dimension check. It is a practical rule-based check designed to reveal risk areas before you cut the material.
How to fit drawers into an existing cabinet (I only know the inner dimensions)?
If you already have a built cabinet and know the exact inner space (clearance), it's easy. Enter your inner dimensions into the main fields for outer width and height, and set the "Cabinet Mat. Thickness" to 0. This tricks the calculator into not deducting anything, and it will calculate the drawers perfectly for your opening.
How does the Opticutter work?
Opticutter is an integrated tool that calculates a highly efficient way to cut your parts from a sheet of material. Depending on settings, it also accounts for edge banding and saw blade thickness.
How does the calculator handle ABS edge banding?
I use a smart deduction system. For drawer fronts, the edge thickness is deducted from all 4 sides (2x thickness). However, for cabinet parts and drawer boxes, it is only deducted from the visible front edges (1x thickness) to maintain the exact lengths required for the hardware.
Why can't I enter 18 mm (3/4") material for Blum undermount drawers in the calculator?
Blum undermount slides are designed for a maximum drawer side thickness of 16 mm. I know some woodworkers use 18mm material and route the bottom edge. However, if the calculator allowed this workaround, it would mess up the lengths of your front and back drawer pieces. To ensure your cut list doesn't get messed up and the drawer can be assembled normally, the app sticks to the official limit.
How to maximize storage space with overlay fronts?
Overlay fronts create a dead space under the drawers. Normally, inner boxes are made the same height for interchangeability. But if you extend them downwards, you get maximum space. The calculator can do this automatically - just select "Maximize drawer capacity" in the Expert Settings.
Why are my undermount slides rubbing or the front not sitting flush?
The most common mistake is poor squareness. Always measure both diagonals when assembling the drawer box. They should be as equal as possible – ideally within one millimeter. The inner cabinet width (LW) also plays a role – if you are off by more than 1 mm, the slides will rub.
What is the best way to set equal gaps between drawer fronts?
The standard gap is 2 to 3 mm. A workshop trick: Take a standard deck of playing cards, divide it exactly in half, and place them on the left and right (or top and bottom). This centers the front perfectly without complex measuring.
What slide length should I choose for a non-standard cabinet depth?
Slides are manufactured in standard lengths (usually in 50 mm increments). If you have a non-standard depth (e.g., 470 mm), go for the nearest shorter one (450 mm). Golden rule: the entire drawer with the slide must be 10–15 mm shorter than the inner clear depth of the cabinet so it doesn't hit the back.
What is the difference between an overlay and an inset front?
An overlay front covers the cabinet edges and easily hides minor inaccuracies. An inset front is flush with the cabinet edge – it looks premium but requires absolutely precise assembly and a perfectly square cabinet.
Stairs Calculator
Why is my first step higher than the others after assembly?
You probably forgot to shorten the first step. The bottom cut of the stringer must always be shortened by exactly the thickness of the tread. The calculator deducts this value automatically so all steps end up the same height after the treads are installed.
What is the stringer throat and why does the calculator monitor it?
The throat is the narrowest part of the stringer left after cutting the notches. For standard interior loads, carpenters recommend keeping at least 115–120 mm of solid wood. If the throat is narrower, the material might not handle the load and could crack. For load-bearing or public stairs, always consult a structural engineer.
How to calculate stairs so they are comfortable and not too steep?
The basis is Lehman's formula (ideal step): 2x riser height + 1x tread depth = approx. 630 mm (24.8"). The riser should be 170–180 mm, the tread 270–290 mm. If you go above 200 mm for the riser, the stairs become very steep. The calculator monitors ergonomics automatically.
Can I calculate stairs from a predetermined tread board depth?
Yes. The calculator provides two design methods. Automatic mode calculates the effective tread depth from the total rise, ergonomics, and available run. Fixed Depth mode lets you enter the overall physical tread board depth, including the nosing. The calculator subtracts the nosing to determine the actual stringer going and checks whether the complete staircase fits within the available run. If it does not fit, the calculator keeps your board depth unchanged and shows the required run instead.
What to watch out for regarding the ceiling above the stairs (headroom)?
When planning, don't forget your head! The vertical distance between the step edge and the ceiling above it should be enough so you don't hit your head when walking down – usually, at least around 2100 mm (82.7") is recommended for comfortable clearance.
What is the step overhang (nosing) good for and how much should it be?
The overhang (usually 20–30 mm) increases the total tread area. On steeper stairs, it significantly helps when walking down, as the heel has more room to step safely.
Mix Ratio Calculator (Epoxy, Lacquer)
Why did my epoxy boil, smoke, or crack in the cup?
An exothermic reaction occurred. Epoxy generates heat as it cures. A layer that is too thick or a large volume left in a cup can overheat dangerously. Only mix as much material as you can process within the pot life, and stick to the maximum layer thickness according to the technical data sheet.
Can I mix epoxy or lacquer by volume instead of weight?
Never confuse weight and volume ratios! The components (resin and hardener) often have different densities. This means 100 ml of resin might not weigh 100 g. If the densities are entered correctly or available in the database, the calculator will convert it automatically.
Why did my epoxy stay sticky and soft in some places?
You didn't mix it properly. Unmixed material often stays at the bottom and on the sides of the cup. Use the "two-cup rule" – after the first thorough mix, pour the mixture into a second clean cup and mix again. This significantly reduces the risk of sticky spots.
Why are there bubbles in my epoxy or why is it cloudy?
Most often, this is caused by wood moisture or air escaping from pores. The wood should ideally have 8–12% moisture. Before the main pour, always brush the edges with a thin layer of epoxy (seal coat). This seals the wood and significantly reduces the risk of bubbles.
Why did my epoxy harden in the cup faster than the instructions said?
Pot life shortens with volume. A large volume mixed in a cup hardens and heats up much faster than a thin layer poured on a table. Always mix only as much material as you can comfortably process.
Shelf Sag Calculator
Why calculate shelf sag over 10 years? How can I prevent it?
Wood-based materials (especially particleboard/MDF) "creep" and deform over time under sustained loads. What looks straight today might sag heavily in 5 years. If your result shows a bad sag, the best trick is to add a vertical stiffening lip under the front edge, or screw the shelf firmly to the sides instead of resting it on pins.
What is the best way to reinforce a shelf so it doesn't sag?
The best trick is to add a vertical stiffening lip (apron) underneath or at the front of the shelf. Another option is to screw the shelf firmly to the sides and back of the cabinet instead of just resting it on shelf pins.
Does grain direction matter for solid wood and plywood?
Absolutely! The grain must always run along the length of the shelf (from support to support). If you cut the board so the grain runs across, the material's load-bearing capacity will be dramatically lower, and the shelf can easily break under load.
What shelf sag is still aesthetically acceptable?
As a rule of thumb, a sag limit of L/300 is often used for an "aesthetically straight" shelf. This means the sag shouldn't exceed 1/300 of its length (e.g., for a 900 mm shelf, the max is 3 mm). The calculator monitors this limit and warns you visually.
Even Spacing Calculator
Why am I missing a few centimeters at the end of my fence or paneling?
A cumulative error occurred. Never measure from piece to piece (from slat to slat). Every millimeter of inaccuracy adds up. The calculator generates continuous running dimensions – you pull the tape measure once, lock it, and just make marks.
How to calculate a fence or paneling so I don't end up with an ugly offcut at the end?
In the calculator, you can play with the edge offsets. Set symmetrical edges so that you end up with a full slat or an equal gap on both sides. The visual balance of the start and end determines whether the work looks professional.
What is the center-to-center spacing good for?
It is an absolutely crucial dimension for drilling holes (e.g., for dowels or screws). Center-to-center spacing is often more important in structural joints than the actual gap between the materials.
Safety & Responsibility
What if the calculator makes a mistake and I ruin my material?
The calculator works from the values you enter and the rules built into the app, but the old rule "measure twice, cut once" still applies. Always double-check your dimensions before cutting into expensive material. The app is a great helper, but you are responsible for the final cut.
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