Embed Calculators
Add free calculator widgets to your blog or website
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.
Maharashtra Stamp Duty Calculator
Calculate stamp duty, metro cess, local body tax and registration fee for property purchases in Maharashtra. Covers Mumbai, Pune, Nashik, Nagpur, and rural areas with women concession and gift deed rates.
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.
Korean Age Calculator (Man nai, Se-neun nai, Yeon nai)
Calculate your Korean age in all three systems — Man nai (legal, since 2023), Se-neun nai (traditional) and Yeon nai (year age) — from a single date of birth.
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.
Tapera Calculator (Indonesia)
Calculate your Indonesian Tapera contribution (2.5% employee + 0.5% employer, or 3% self-employed) and project the long-term balance with BP Tapera yield assumptions.
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.
Calorie Calculator (TDEE & Macros)
Calculate your daily calorie needs and macronutrient targets. Get personalized protein, carbs, and fat goals for weight loss, maintenance, or muscle gain based on your TDEE.
Body Fat Calculator
Estimate your body fat percentage from neck, waist (and hip for women) using the US Navy circumference method. Get fat mass, lean body mass, and ACE/ACSM healthy ranges.
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.
Sleep Calculator
Find the best time to go to bed or wake up based on sleep cycles. Calculate optimal sleep times for 3 to 6 complete 90-minute cycles.
Social Jet Lag Calculator
Measure your social jet lag in hours, find your chronotype, and get a personalized bedtime fix. Based on the Munich ChronoType Questionnaire (MCTQ).
Pregnancy Calculator
Calculate your due date, current gestational age, and pregnancy milestones from your last menstrual period, conception date, IVF transfer, or known due date. Buddhist Era dates supported in Thailand.
Ovulation Calculator
Estimate your next ovulation date, ASRM 6-day fertile window, and the earliest day a home pregnancy test could read positive. Plan three cycles ahead with a stateless calendar visualization.
Buddhist Calendar Converter
Convert dates between the Gregorian calendar (CE) and the Thai Buddhist Era calendar (BE). Handles the pre-1941 Thailand reform automatically.
Hijri Calendar Converter
Convert dates between the Hijri (Islamic) lunar calendar and the Gregorian calendar. Shows AH year, Ramadan and Eid countdowns, and Arabic-Indic numerals.
Hebrew Calendar Converter
Convert dates between the Hebrew (Jewish) and Gregorian calendars. Includes Adar I/II in leap years and upcoming festival countdowns.
World Calendars Converter
Convert any date across six world calendar systems at once: Gregorian, Hijri, Hebrew, Persian, Japanese Era, and Buddhist.
Genshin Pity Calculator
Calculate your chance of getting the featured 5★ on the Genshin Impact Character Event, Weapon Event (Epitomized Path), and Standard banners.
HSR Warp Calculator
Calculate your pull probability on Honkai: Star Rail character, Light Cone, and standard warp banners. Mobile-friendly with a plain-language result.
ZZZ Signal Calculator
Calculate your odds on Zenless Zone Zero's Exclusive (Agent), W-Engine, and Stable channels. Target M0–M6 and read the result in plain words.
Wuthering Waves Convene Calculator
Calculate your pull probability for Wuthering Waves featured resonator, weapon, and standard convenes. 100% featured weapon banner supported.
NTE Pity Calculator
Calculate your pull probability on Neverness to Everness (NTE) Limited Character, Arc weapon, and Standard banners. No 50/50 on character banner, Arc 25/75 with failsafe, and Scarborough Fair soft pity.
Arknights: Endfield Pity Calculator
Calculate your pull probability on Arknights: Endfield Chartered Headhunting (limited character), Arsenal Issue (weapon), and Basic Headhunting banners. Dual-counter pity: 80 hard pity that carries between banners, and a 120-pull featured guarantee that resets each banner. No 50/50 failsafe.
Factorio Production Calculator
Know exactly how many assemblers, furnaces, and chemical plants you need for any Factorio recipe. Covers the base game and Space Age, with modules, beacons, and belt throughput — every ratio worked out for you.
Satisfactory Production Calculator
Plan any Satisfactory production chain to the recipe. Full graph solver with all 106 alternate recipes, Power Shard overclocking up to 250%, Somersloop production amplification, byproduct routing, and peak-vs-average power for Particle Accelerator, Quantum Encoder, and Converter — every ratio verified against the wiki.
Dwarf Fortress Food and Booze Calculator
Plan your Dwarf Fortress food and booze production. Computes farm tiles, planters, brewers, stills and barrels needed to feed N dwarves year-round, using formulas from dwarffortresswiki.org.
eDPI Calculator
Calculate eDPI, cm/360 and inches/360 for CS2, Valorant, Apex Legends, Fortnite, Overwatch 2 and other FPS games. See where you land vs pros and convert your sensitivity between games.
CS2 eDPI Calculator
Calculate your eDPI, cm/360 and inches/360 for Counter-Strike 2. Compare your sensitivity against ZywOo, s1mple, NiKo, donk, m0NESY and device.
OpenTTD Cargo Income Calculator
See exactly what each delivery pays in OpenTTD. Pick a cargo, set the distance and days in transit, and the calculator returns £ per trip, £ per tile, £ per day, and the most profitable cargo for that route.
ZDoom Damage and DPS Calculator
Compute exact damage range, expected DPS and time-to-kill for any ZDoom / GZDoom weapon or projectile. Includes the random(1,8) multiplier, STRIFEDAMAGE flag, and a tic-to-seconds converter for ACS scripts.