Power & Math · Speed & Conversion

Data & Bandwidth Unit Converter

Convert between Mbps, Gbps, MB/s, GB/s, and calculate file download duration across network connection speeds.

Technical Explainer

Converting Network Throughput & Download Times

Network bandwidth is measured in bits per second (bps, Mbps, Gbps), whereas stored file sizes are measured in bytes (B, MB, GB). One byte equals 8 bits.

Why This Matters For ISPs & WISPs

Understanding the 8:1 ratio between bits and bytes clarifies why a 100 Mbps broadband connection downloads data at a peak speed of 12.5 MB/sec.

Interactive Data & Bandwidth Unit Converter Workspace

17 Interactive Engineering Calculators

Free ISP Engineering & Planning Tools

Precision planning tools for WISPs and fiber operators — RF, optical, power, addressing, and business math. No sign-up required.

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Link Budget Calculator

Calculate FSPL, RSSI, and EIRP for wireless links (2.4GHz to 60GHz).

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Profitability & ROI

Tower Revenue Calculator

Analyze ISP tower profitability, CAPEX/OPEX, and business Break-Even Point.

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FTTH & PON

GPON Splitter Calculator

Plan optical budgets for PON networks. Calculate splitter and fiber loss.

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UPS Runtime Calculator

Estimate battery backup time based on load (Watts) and battery capacity (Ah).

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Addressing & CIDR

IPv4 Subnet Calculator

CIDR to Subnet Mask, Network Address, Broadcast, and Host Range calculator.

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NAT & IPv4 Pool

CGNAT Calculator

Plan Carrier-Grade NAT: subscribers per public IPv4, port blocks, and pool capacity.

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Speed & Conversion

Data & Bandwidth Converter

Convert Mbps to Gbps, MB to GB, bits to bytes, plus a download time calculator.

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Backhaul & Capacity

Bandwidth Calculator

Plan oversubscription ratios and total backhaul capacity requirements.

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ROI Comparison

Compare Kashtrix costs vs legacy platforms (Splynx/Sonar). See how much you can save.

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Compliance & SLA

SLA Uptime Calculator

Convert SLA uptime percentages (99.9%) to allowable downtime limits.

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Hardware Vendor OUI

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Find the hardware vendor behind any MAC address and decode the OUI bits.

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DNS Lookup

Query live A, AAAA, MX, TXT, NS, CNAME and SOA records for any domain.

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Client Detection

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See your public IP address, reverse DNS, ISP and location instantly.

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Geolocation

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Geolocate any IPv4 or IPv6 address: country, city, ISP, ASN and timezone.

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CIDR Aggregation

CIDR Calculator

Expand a CIDR block to its range, or aggregate an IP range into CIDR blocks.

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IPv6 Subnetting

IPv6 Subnet Calculator

Network, address range, expanded form and subnet counts for any IPv6 prefix.

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RF Power Math

dBm to Watt Converter

Convert RF power between dBm, mW and watts, and dB gain to a linear ratio.

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Interactive Calculator Workspace

Data & Bandwidth Converter

Download Time Calculator:

Estimated Download Time:
68 min 16 sec

To download 50 GB file over 100 Mbps line.

Worked Engineering Example

Real-World Calculation Walkthrough

Scenario

Downloading a 50 Gigabyte (GB) software image over a 100 Mbps broadband link

Input Parameters

File Size50 Gigabytes (GB)
Connection Speed100 Mbps

Calculation Output

Download Speed in MB/sec12.5 MB/sec
Total File Size in Bits400,000 Megabits (Mb)
Estimated Download Time1 Hour 6 Minutes 40 Seconds
Engineering Analysis:Dividing 50 GB (400,000 Mb) by 100 Mbps yields 4,000 seconds, which equals 1 hour, 6 minutes, and 40 seconds of continuous transfer time.
Frequently Asked Questions

Data & Bandwidth Unit Converter Engineering FAQs

Why does a 1 Gbps fiber connection not download at 1,000 MB/sec?

1 Gbps equals 1,000 Megabits per second. Dividing by 8 bits per byte gives a theoretical maximum transfer rate of 125 Megabytes (MB) per second.

What network protocol overhead should be subtracted from raw bandwidth?

TCP/IP header overhead, Ethernet framing, and TCP windowing reduce usable payload throughput by approximately 3% to 5%.

What is the difference between Megabytes (MB) and Mebibytes (MiB)?

Megabytes use decimal notation (10^6 = 1,000,000 bytes), while Mebibytes use binary notation (2^20 = 1,048,576 bytes).