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View allEMI Calculator
Estimate your monthly loan repayment, total interest and full amortization schedule — the standard way loan repayments are structured across mortgages, auto loans, and personal loans.
CalculateAge Calculator
Find your exact age in years, months and days from your date of birth — down to the total number of days you've been alive.
CalculateBMI Calculator
Check your Body Mass Index and see which healthy range you fall into — a quick, widely-used screening measure based on height and weight alone.
CalculateGST Calculator
Add or remove GST from an amount, either direction, instantly — handling the inclusive and exclusive calculation correctly, which trips up many manual attempts.
CalculateMortgage Payment Calculator (PITI)
Find your full monthly mortgage payment — principal, interest, property tax, home insurance, PMI and HOA combined — plus a complete amortization schedule.
CalculateScam Risk Score Calculator
Answer 10 quick yes/no questions about a message, call or offer to get a 0-100 scam-risk score, a risk level, and a clear recommendation — entirely in your browser.
CalculateMedicare Advantage vs. Original Medicare Cost Calculator
Compare your estimated annual cost under Original Medicare + Medigap + Part D versus a Medicare Advantage plan, based on your own premium and expected out-of-pocket numbers.
CalculateCalorie Calculator
Estimate your daily calorie needs based on your body and activity level — combining resting metabolism with an activity multiplier for a full daily target.
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323+ calculators across 16 categories — pick a world and dive in.
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View allScam Risk Score Calculator
Answer 10 quick yes/no questions about a message, call or offer to get a 0-100 scam-risk score, a risk level, and a clear recommendation — entirely in your browser.
CalculateWebsite Trust Score Calculator
Paste a URL to check it against structural phishing red flags — HTTPS, IP-literal hosts, suspicious TLDs, typosquatted brand names, and phishing-style wording — instantly and entirely in your browser.
CalculateJob Offer Scam Risk Calculator
Score a job offer against 7 common fake-job red flags — unusually high pay, no real interview, generic email, messaging-app-only contact, and upfront fees.
CalculateInvestment Scam Risk Calculator
Score an investment opportunity against 5 classic Ponzi and pump-and-dump red flags — guaranteed returns, lock-in periods, referral bonuses, crypto and withdrawal restrictions.
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Chrome Extension
A popup for a quick answer, or a side panel that stays open while you browse. Runs locally, no account.
Get the extensionVS Code Extension
Run a calculation in a panel next to your code, without alt-tabbing to a browser.
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A calculator side panel next to your notes — handy for problem sets and study math.
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Drop any calculator into WordPress, Notion, or any site that takes an iframe — free, no API key.
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Amazon Scam: Fake Order Confirmations, 'Unauthorized Purchase' Calls, and Brushing
From fake order-confirmation texts to phone calls about an 'unauthorized $800 purchase,' Amazon-themed scams are among the most reported in the US. Here's how each version works.
Apple ID Scam: How It Works and How to Spot a Fake 'Your Apple ID Has Been Locked' Message
Apple ID phishing texts and emails claiming your account is locked or a purchase needs verifying are one of the most common phone scams in the US. Here's exactly how the scam works and how to check if a message is real.
Crypto Scam: Pig Butchering, Fake Exchanges, and Guaranteed-Return Schemes
Cryptocurrency's irreversible transactions and lack of chargeback protection make it a preferred target for scammers. Here's how the most common crypto scam patterns work, from romance-driven 'pig butchering' to fake trading platforms.
Facebook Marketplace Scam: The Most Common Buyer and Seller Tricks
Facebook Marketplace scams run in both directions — fake buyers and fake sellers — and the tactics are different enough to be worth knowing separately. Here's how each version works and how to trade safely.