Free Tool · Developer
API Rate Limit Calculator
Enter your expected usage pattern and see exactly how close you are to hitting API rate limits. Includes presets for OpenAI, Groq, Anthropic, Stripe, and GitHub.
API Provider
Rate Limits
RPM = requests/min · RPD = requests/day · TPM = tokens/min · TPD = tokens/day
Your Usage Pattern
500
110,000
500
508,000
Derived usage
RPM: 8.33RPD: 12,000TPM: 4,166.667TPD: 6,000,000
You will exceed your RPD limit
Reduce your request rate or upgrade to a higher tier.
Requests per Minute (RPM)13.9% of limit
8.3 projected / 60 limit rpm✓ OK
Requests per Day (RPD)100.0% of limit
12,000 projected / 1,000 limit rpd🔴 Over limit
All calculations run in your browser. Rate limits vary by account tier — check your provider dashboard for exact limits.
How It Works
Know exactly when your API usage will hit limits — before you hit them in production.
01
Select your provider
Choose from OpenAI GPT-4o, Anthropic Claude, Groq, Stripe, GitHub, Twitter, or enter custom limits from your dashboard.
02
Set your usage
Enter requests per hour and tokens per request (for LLM APIs). The calculator derives RPM, RPD, TPM, and TPD automatically.
03
See your headroom
Color-coded meters show how close you are to each limit. Bottleneck detection highlights which limit you'll hit first.
Example — OpenAI GPT-4o, 500 req/hr, 4096 tokens/req
Requests/min (RPM)
8.3 / 500OK
Requests/day (RPD)
200 / 10,000OK
Tokens/min (TPM)
34,133 / 800,000OK
Tokens/day (TPD)
819,200 / 800,000OVER LIMIT