Calculators that actually say something.
Exact math by code, judgment by AI. Every tool here understands your situation in plain English, gives you a verdict, and never lets a language model near the arithmetic.
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AI Tip Calculator & Bill Splitter
Instant 15/18/20% tips, plus an AI that splits messy group bills in plain English, knows tipping customs in 100+ countries, and covers every service industry.
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LLM API Cost Calculator
Exact per-call and monthly costs across GPT, Claude and Gemini — plus an AI advisor that tells you which model actually fits your workload and where you're burning money.
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In the works
Why another calculator site?
Regular calculators hand you a number and go silent. Chatbots chat but can't be trusted with math. Every tool here does both jobs right: numbers are computed by verified, tested code — never by a language model — and the AI layer only interprets, judges, and explains on top of exact results. Fast when you need fast, smart when you need smart.