Home and DIY calculators
Plan concrete, decorating, flooring, moving and household energy tasks with practical estimates.
- Square Footage Calculator — Square feet for rooms and yards, with waste and cost.
- Cubic Yard Calculator — Cubic yards from length, width and depth, with cost.
- Mulch Calculator: Cubic Yards & Bags — Mulch in cubic yards and bags for a garden bed.
- Board Foot Calculator for Lumber — Board feet and cost for a lumber order.
- Concrete Calculator — Estimates concrete volume in cubic yards or cubic meters, with a clear waste allowance.
- Gravel & Soil Calculator — Estimates material volume and weight with an editable bulk-density assumption.
- Stair Calculator — Estimates straight-stair risers, tread depth and total run for early planning.
- Roofing Calculator — Estimates gable-roof area, roofing squares and bundles with editable product coverage.
- Paint Calculator — Calculates wall and ceiling area and the expected amount of paint.
- Tile Calculator — Calculates the right amount of tile, accounting for waste.
- Brick Calculator — Calculates the approximate brick requirement, including joints and waste.
- Laminate Flooring Calculator — Calculates the laminate flooring packages needed, including waste.
- Wallpaper Calculator — Calculates the wallpaper rolls needed for a room, including waste.
- Moving Box Calculator — Estimates moving box counts and truck volume based on home size.
- Pool Volume Calculator (Gallons) — Pool gallons for rectangular, round and oval pools.
- Pool Chlorine Calculator — How much chlorine to add to reach a target ppm.
- AC BTU Calculator — Estimates the right air conditioner capacity for a room, in BTU.
- Electricity Consumption Calculator — Shows consumption and approximate cost for electrical appliances.
- Natural Gas Cost Calculator — Calculates natural gas cost and its approximate kWh equivalent.
Health and daily routines
Use personal planning tools for dates, sleep, activity and general body measurements.
- Calorie Calculator: TDEE & Weight Loss — Daily calories (TDEE), BMR and targets to lose or gain weight.
- BMI Calculator — Calculates BMI and your approximate daily calorie needs.
- Body Fat Calculator (US Navy Method) — Body fat percentage from tape measurements (US Navy method).
- Ideal Weight Calculator — Ideal weight by four formulas and the healthy BMI range.
- Height Converter: cm to Feet and Inches — Converts height between cm and feet + inches, with a height chart.
- Standard Drink Calculator (US, UK Units) — Standard drinks and UK units from volume and ABV.
- IV Drip Rate Calculator (gtt/min) — Drops per minute and mL/hr for IV infusions.
- Age Calculator — Calculates age or the difference between two dates, plus extra totals.
- Pregnancy Week Calculator — Shows the current pregnancy week, trimester and estimated due date.
- Sleep Calculator — Suggests bedtimes and wake-up times based on sleep cycles.
- Running Pace Calculator — Calculates running pace, time and distance, with estimates for known race distances.
India: land, gold, construction, GST and loans
Convert bigha, katha, gaj and guntha by state, tola and ratti, price gold jewellery, estimate steel and concrete for building work, work out GST and loan EMIs, and switch between lakh and crore.
- India Land Area Converter: Bigha, Gaj, Acre — Converts bigha, katha, gaj, guntha, cent and acres with state-wise bigha sizes.
- Gold Price Calculator India (22K, 24K, GST) — Jewellery price with making charges and 3% GST, in grams or tola.
- Indian Weight Converter: Tola, Ratti, Maund — Tola, masha, ratti, seer, maund and quintal to grams and carats.
- Steel Bar Weight Calculator (D²/162, kg/m) — Rebar weight per meter and total kg with D²/162.
- Concrete Mix Calculator: Cement, Sand, Aggregate — Cement bags, sand and aggregate for M20, M25 and other grades.
- GST Calculator India (5%, 18%, 40% Slabs) — Add or remove GST with CGST/SGST or IGST split, current slabs.
- EMI Calculator: Home, Car & Personal Loan — Monthly EMI, total interest and a yearly repayment table.
- Lakh to Crore, Million & Billion Converter — Converts lakh and crore to million and billion, with Indian digit grouping.
School and study
Work out weighted class grades, letter grades and the score you need on a final exam.
- Grade Calculator: Weighted & Final Exam Grade — Weighted class grade, letter grade and final exam score needed.
Transport, cost and comparison tools
Estimate travel energy use, tax, charging needs and familiar real-world comparisons.
- Fuel Consumption Calculator — Converts between km/L, L/100km and mpg, and estimates trip cost.
- MPG to L/100 km Converter (US & UK) — Converts mpg (US/UK), L/100 km and km/L.
- Tire Size Calculator — Compares tire diameter, circumference and estimated speedometer difference.
- EV Charging Calculator — Calculates EV charging time or estimated driving range.
- VAT Calculator — Calculates the price before and after tax, and the tax amount itself.
- Length Comparison — Turns a length value into understandable visual comparisons.
- Weight Comparison — Compares a weight against everyday and large-scale examples.