Smart Calculators

Smart

Calculators

Embed Calculators

Add free calculator widgets to your blog or website

Finance
Everyday
Math
Health & Sports
Technology
Business
Conversion

Compound Interest Calculator

Calculate how your investments grow over time with compound interest and regular contributions.

Discount Calculator

Calculate the final price after applying a single discount. Quick and simple.

Discount Percentage Calculator

Find out what percentage discount was applied by entering the original and final prices.

Multiple Discount Calculator

Calculate the final price after applying several chained discounts and find the total effective discount.

Savings Goal Calculator

Calculate how much you need to save per day, week, month, or year to reach your financial goal on time.

Percentage Calculator

Calculate percentages instantly: find X% of a number, what percentage one number is of another, or the percentage change between two values.

BMI Calculator

Calculate your Body Mass Index (BMI) instantly. Get your WHO classification, healthy weight range, and personalized recommendations.

Running Pace Calculator

Calculate your running pace, time, or distance. Get splits, speed, and race predictions with the Riegel formula.

Token Calculator

Calculate the cost of using AI language models. Estimate tokens from text and compare pricing across models like GPT-4, Claude, and Gemini.

Mortgage Calculator

Calculate your monthly mortgage payment, total interest, and view a full amortization schedule. Includes property tax, insurance, PMI, and extra payment analysis.

Loan Calculator

Calculate your monthly loan payment, total interest, and total cost. Compare up to 3 loan scenarios side by side. Supports fixed (annuity) and decreasing payment methods.

Loan Comparison

Compare up to 3 loan scenarios side by side. See which loan costs less in total interest and find the best deal.

Crowdfunding ROI Calculator

Calculate the return on investment for crowdfunding projects. Estimate net profit, annualized ROI, and fees.

Age Calculator

Calculate your exact age in years, months, and days. Find out how many total days, weeks, hours, and minutes you have lived — plus how many days until your next birthday.

Date Duration Calculator

Calculate the exact duration between two dates and times. Get results in years, months, days, hours, minutes, and seconds.

Shoe Size Converter

Convert shoe sizes between US, UK, EU, JP, KR, BR, MX, AU and foot length. Instant results for men, women, and kids.

Shoe Size Converter: US to EU

Convert shoe sizes between US and EU instantly. Quick reference charts for men's, women's, and kids' sizes with foot length in cm and inches.

Shoe Size Converter: US to UK

Convert shoe sizes between US and UK instantly. Quick reference charts for men's, women's, and kids' sizes with foot length in cm and inches.

Shoe Size Converter: EU to UK

Convert European to UK shoe sizes instantly. Complete EU to UK size charts for men's, women's, and kids' footwear with foot length measurements.

VAT / Sales Tax Calculator

Calculate VAT, GST, or sales tax instantly. Add or remove tax from any price with automatic rate detection for 30+ countries.

BMR Calculator (Basal Metabolic Rate)

Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE). Get personalized calorie targets for weight loss, maintenance, and weight gain.

Cooking Converter

Convert between any cooking measurements: cups, tablespoons, teaspoons, ml, liters, grams, kg, ounces, and pounds. Ingredient-aware for volume-to-weight conversions.

Cups to Grams Converter

Convert cups to grams and grams to cups for 30 cooking ingredients. Quick fraction buttons, ingredient selector, and reference table.

Tablespoons to ML Converter

Convert tablespoons to milliliters and ml to tbsp. Supports US, metric, and Australian tablespoon standards.

Ounces to Grams Converter

Convert ounces to grams and grams to ounces instantly. Quick reference table for common weight conversions.

Islamic Mahr Calculator

Calculate Islamic mahr (dowry) in your local currency using live gold and silver prices. Supports Mahr Fatimi, minimum mahr, gold-based, silver-based, and income-based methods.