API Pricing
Simple, transparent pricing for developers. Start free, scale as you grow.
Free
$0
1,500 req/month
- 1,500 API requests per month
- Daily rate updates
- 30+ currencies
- JSON format
- 1 API key
- Community support
Most Popular
Pro
$9/month
30,000 req/month
- 30,000 API requests per month
- Hourly rate updates
- 160+ currencies
- 5 API keys
- Historical data
- Priority email support
Business
$29/month
300,000 req/month
- 300,000 API requests per month
- Hourly rate updates
- 160+ currencies
- Unlimited API keys
- Historical data
- Dedicated support
- SLA guarantee (99.9%)
Top-up Credits
Need more requests? Buy credits that never expire.
5,000requests$2one-time$0.40/1k
25,000requests$7one-time$0.28/1k
100,000requests$20one-time$0.20/1k
Credits never expire - Added to your monthly quota - Available on all plans
Quick Start
curl https://unitswapper.net/api/v1/convert \ -H "Authorization: Bearer YOUR_API_KEY" \ -G -d "from=kilometer&to=mile&value=42"