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REST/GraphQL API Payload Size, Bandwidth & Cloud Egress Cost Calculator

Calculate monthly terabytes (TB) transferred, required throughput in Mbps, and AWS/Vercel/Cloudflare egress bills with Gzip/Brotli compression savings.

⚡ AI & Executive Summary: Quick Answer (2026 Benchmark): For a standard "AWS EC2/ALB API (120 RPS, $0.09/GB)" configuration (Average Sustained API Requests per Second: 120 • Uncompressed JSON Response Size: 45 • HTTP Content-Encoding Compression Mode: 72), the calculated Estimated Monthly Cloud Egress Bill is $336, with a Monthly Bandwidth Saved via Compression of $865. Use the interactive simulator below to customize parameters or compare against "Enterprise Scale (2.5x Load)" ($841).
✅ Verified by PIS7 Quantitative Engineering Board 📅 Data & Rates Verified: November 2026 🔗 Verified Scenario & Reference Benchmark Table (2026) 📐 Mathematical Formula & Derivation
⚙️ Simulation Parameters 🇺🇸 USD ($)
Quick Industry Presets:
Req/sec
KB
$
🛡️ 100% Client-Side Execution: Your numbers never leave your browser.
📊 Real-Time Computed Output
Estimated Monthly Cloud Egress Bill
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Monthly Bandwidth Saved via Compression
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Net Monthly Data Transferred (Terabytes)
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Sustained Network Throughput Required
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Monthly Bandwidth Cost Comparison (Compressed Egress Bill vs. Money Saved by Brotli/Gzip)
50%
Net Compressed Egress Cost —
Egress Cost Saved via Compression —
Est. Request Header Overhead —
⚡ Recommended Infrastructure & Tooling Partner • Zero Egress Partner Cloudflare R2 & Workers Zero-Egress Architecture

Stop paying $0.09/GB AWS S3 egress fees. Store and serve petabytes of API data and assets with $0 egress bandwidth charges.

📊 Verified Scenario & Reference Benchmark Table (2026)

Quick Answer (2026 Benchmark): For a standard "AWS EC2/ALB API (120 RPS, $0.09/GB)" configuration (Average Sustained API Requests per Second: 120 • Uncompressed JSON Response Size: 45 • HTTP Content-Encoding Compression Mode: 72), the calculated Estimated Monthly Cloud Egress Bill is $336, with a Monthly Bandwidth Saved via Compression of $865. Use the interactive simulator below to customize parameters or compare against "Enterprise Scale (2.5x Load)" ($841).

Scenario / Profile Input Parameters Estimated Monthly Cloud Egress Bill Monthly Bandwidth Saved via Compression
AWS EC2/ALB API (120 RPS, $0.09/GB) Average Sustained API Requests per Second: 120 • Uncompressed JSON Response Size: 45 • HTTP Content-Encoding Compression Mode: 72 $336 $865
High-Traffic Mobile Backend (850 RPS) Average Sustained API Requests per Second: 850 • Uncompressed JSON Response Size: 64 • HTTP Content-Encoding Compression Mode: 72 $3,012 $7,746
Compact Scale (0.5x Baseline) Average Sustained API Requests per Second: 60 • Uncompressed JSON Response Size: 45 • HTTP Content-Encoding Compression Mode: 72 $168 $432
Enterprise Scale (2.5x Load) Average Sustained API Requests per Second: 300 • Uncompressed JSON Response Size: 45 • HTTP Content-Encoding Compression Mode: 72 $841 $2,162

📐 Mathematical Formula & Derivation

TB_{month} = \frac{\text{RPS} \times 86400 \times 30 \times S_{KB} \times (1 - c_{comp})}{10^9}

🔬 Engineering Methodology & Benchmark Analysis

Hyperscale cloud providers (AWS, GCP, Azure) charge $0.08 to $0.12 per gigabyte of outbound internet egress, and managed PaaS wrappers often charge $0.15 to $0.40/GB.

Because JSON payloads contain repetitive keys and UTF-8 strings, enabling Brotli (`br`) or Zstandard (`zstd`) compression at the reverse proxy or CDN edge reduces wire transfer size by 68%–78% with negligible CPU overhead.

🛠️ Step-by-Step Engineering Calculation Guide

  1. Average Sustained API Requests per Second (RPS): Configure "Average Sustained API Requests per Second (RPS)" (default benchmark: 120) or select an industry preset.
  2. Uncompressed JSON Response Size (Kilobytes — KB): Configure "Uncompressed JSON Response Size (Kilobytes — KB)" (default benchmark: 45) or select an industry preset.
  3. HTTP Content-Encoding Compression Mode: Configure "HTTP Content-Encoding Compression Mode" (default benchmark: 72) or select an industry preset.
  4. Cloud Provider Data Egress Price per GB: Configure "Cloud Provider Data Egress Price per GB" (default benchmark: 0.09) or select an industry preset.

❓ Frequently Asked Technical Questions

How can I eliminate AWS/GCP API egress fees almost entirely?

Placing a zero-egress edge network (such as Cloudflare CDN / Workers or Fastly) in front of your origin with short-TTL caching or migrating static/blob payloads to Cloudflare R2 ($0 egress) removes per-GB bandwidth penalties.

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