Developer calculators
API pricing, cloud costs, SaaS metrics and freelance rates
- AI Voice, Image & Video API Cost Calculator Compare speech, image and video API costs
- Bandwidth Overage Calculator Compare bandwidth overage across hosting platforms
- CAC Payback Period Calculator Months of margin to recover acquisition cost
- Cloud Egress Cost Calculator Compare egress bills across four clouds
- Cloud vs. Self-Hosted Cost Calculator Cloud bill against your own servers
- Freelance Rate Calculator Hourly and day rate from target salary
- LLM API Cost Calculator Compare monthly spend across LLM APIs
- LLM Fine-Tuning & Training VRAM Calculator GPU memory to fine-tune a model
- LLM Inference Speed (Tokens/Sec) Calculator Tokens per second on your hardware
- LLM Token Calculator Words or characters to tokens and cost
- LLM VRAM & GPU Sizing Calculator GPU memory a model needs to run
- LTV Calculator Customer lifetime value from margin and churn
- MRR Churn Calculator Project MRR under churn over 12 months
- Number Base Converter Binary, octal, decimal and hex at once
- Payment Gateway Fee Calculator Compare Stripe, PayPal, Paddle, Lemon Squeezy
- RAG Chunking & Embedding Cost Calculator Chunks, index RAM and embedding cost
- Rule of 40 Calculator Growth plus margin against the 40 benchmark
- Server Rack Power, PSU Sizing & Heat (BTU) Calculator Rack power, PSU size, UPS VA and heat
- SLA Uptime & Downtime Calculator Uptime % to allowed downtime, and back
- Software Project Cost Estimator Hours, budget and timeline from feature scope
- Subnet Calculator Network, broadcast and hosts from CIDR
- Unix Timestamp Converter Epoch seconds to UTC dates and back
- Vector Database Cost Calculator Monthly cost of hosting your embeddings
Which developer calculator to use
For AI workloads, the LLM token calculator turns words or characters into tokens, the LLM API cost calculator compares monthly spend across providers' APIs, and the LLM VRAM calculator estimates how much GPU memory an open-weight model needs to run on your own hardware. The RAG chunking calculator counts the chunks a corpus splits into, the memory their vector index needs and what embedding them costs, and the vector database cost calculator prices hosting those embeddings. The AI voice, image and video API cost calculator compares speech, image and video generation per 1,000 minutes or generations.
For infrastructure, the cloud egress cost calculator and the bandwidth overage calculator compare what providers charge for data transfer, and the cloud vs. self-hosted calculator sets a cloud bill against running your own servers. The payment gateway fee calculator compares Stripe, PayPal, Paddle and Lemon Squeezy fees on the same sales. Pages built on provider prices show the date those prices were last checked.
For SaaS metrics, there are calculators for LTV, CAC payback, MRR churn and the Rule of 40, and for freelance work, a rate calculator and a software project cost estimator. Everyday utilities round out the set: the subnet calculator, the number base converter, the Unix timestamp converter and the SLA uptime calculator, which turns an uptime target into allowed downtime.