Professional-grade calculators for every need. From finance and health to gaming and engineering — plus expert marketing services for your business.
GPA, SAT, AP score, grade curve, test grade calculators and academic tools for students and educators.
Calculate your Grade Point Average — weighted, unweighted, c...
Calculate curved grades using various curving methods for fa...
Calculate your SAT score based on correct answers in Math an...
Calculate your ACT composite score from individual section s...
Predict your AP Chemistry exam score based on multiple choic...
Predict your AP Biology exam score from practice test perfor...
Predict your AP Physics 1 & 2 exam scores based on practice ...
Predict your AP Calculus BC score from multiple choice and f...
Predict your AP English Literature exam score based on secti...
Calculate what grade you need on your final exam to reach yo...
BMI, BMR, TDEE, medication dosage, pregnancy, and health assessment calculators.
Calculate your Body Mass Index and see which weight category...
Calculate your Basal Metabolic Rate — calories your body nee...
Calculate your Total Daily Energy Expenditure including acti...
Calculate your daily calorie needs for weight maintenance, l...
Estimate your body fat percentage using measurements and US ...
Calculate your estimated due date based on last menstrual pe...
Calculate your baby's growth percentiles for weight, height,...
Calculate correct medication dosages based on weight, concen...
Calculate semaglutide dosing schedule for weight management ...
Calculate tirzepatide dosing for weight management and diabe...
Mortgage, loan, investment, retirement, tax, and personal finance calculators.
Calculate monthly mortgage payments including principal, int...
Generate a complete amortization schedule showing each payme...
Calculate monthly payments for any type of loan with fixed i...
Calculate car loan payments — monthly payment, total interes...
Calculate how your investments grow with compound interest o...
Calculate potential investment returns with compound growth ...
Estimate if you're on track for retirement based on savings ...
Calculate how your 401k savings will grow with employer matc...
Estimate your income tax refund or amount due for the curren...
Calculate capital gains tax on investment sales based on hol...
MapleStory, OSRS, Genshin Impact, Pokemon, Evony, and gaming calculators.
Calculate potential stats and probabilities when cubing equi...
Calculate success rates and costs for Starforce enhancement ...
Calculate experience points needed to reach target levels in...
Calculate how dry you are for a drop in Old School RuneScape...
Calculate combat level and combat stats for Old School RuneS...
Calculate farming yields and experience rates in Old School ...
Calculate your Pokemon's Individual Values from its stats an...
Calculate resources needed for character ascension in Genshi...
Calculate the probability of pulling desired items in gacha ...
Calculate troop strength and resource requirements in Last W...
Unit converters, Ohm's law, HVAC, solar, electrical, and engineering calculators.
Convert between hundreds of units across length, weight, vol...
Convert between Celsius, Fahrenheit, Kelvin, and other tempe...
Calculate voltage, current, resistance, or power using Ohm's...
Calculate resistor values from color bands or determine the ...
Calculate how long a battery will last based on capacity and...
Calculate the correct wire gauge for electrical circuits bas...
Calculate the BTUs needed to heat or cool a room based on si...
Calculate heating and cooling load requirements for proper H...
Calculate how many solar panels you need based on energy usa...
Calculate flow rate, velocity, and pipe diameter for fluid s...
Expert digital marketing services to grow your online presence.
Optimize your Shopify store for search engines and drive more organic traffic.
Get your Google My Business profile ranking at the top of local search results.
Build high-quality backlinks through strategic outreach to relevant websites.
High-converting landing pages designed to turn visitors into customers.