Convert between KB, MB, GB, and TB in binary (1024) or decimal (1000) standards. Transfer time estimates, file capacity chart, and visual scale bar.
How many kilobytes in a megabyte? It depends on whether you use the binary (1,024 KB = 1 MB) or decimal (1,000 KB = 1 MB) standard. This converter handles both, showing conversions across kilobytes, megabytes, gigabytes, and terabytes in your choice of standard. It is the quick, practical tool for everyday file size questions.
Beyond simple conversion, the tool estimates how long it would take to transfer your data at various network speeds (10 Mbps to 10 Gbps) and shows how many common files (photos, songs, videos) would fit in the given space. The visual scale bar gives an instant visual sense of how the value compares at each unit level.
Whether you are estimating email attachment sizes, planning cloud storage needs, calculating backup requirements, or comparing hosting plan quotas, this converter provides the answers with both binary and decimal context — ending the confusion about whether 1 GB means 1,000 or 1,024 MB.
File size conversions are needed constantly: email limits, storage plans, download estimates. This tool converts between KB, MB, GB, and TB instantly, estimates transfer times at common network speeds, and shows how many files of various types fit in the space — practical answers in seconds for daily planning and team communication.
Binary: 1 MB = 1,024 KB; 1 GB = 1,024 MB = 1,048,576 KB; 1 TB = 1,024 GB. Decimal: 1 MB = 1,000 KB; 1 GB = 1,000 MB = 1,000,000 KB; 1 TB = 1,000 GB. Transfer time = (size_in_bits) ÷ (speed_in_bits_per_second).
Result: 1 MB (binary) or 1.024 MB (decimal)
1,024 KB in binary standard = exactly 1 MB, since 1 MB = 1,024 KB. In decimal standard, 1,024 KB = 1.024 MB (since 1 MB = 1,000 KB). That is about 1,048,576 bytes.
Understanding file sizes helps with practical decisions. A typical email is 10-50 KB. A Word document is 50-200 KB. A high-resolution JPEG photo is 2-8 MB. An MP3 song is 3-5 MB. An HD movie is 4-5 GB. A modern AAA video game can be 50-150 GB. Knowing these ranges helps estimate storage needs and transfer times.
Network speeds are quoted in bits per second (bps), but files are measured in bytes. Divide by 8: a 100 Mbps connection transfers about 12.5 MB/s. Latency overhead, protocol headers, and congestion mean real throughput is typically 70-90% of the theoretical maximum.
Cloud storage ranges from free tiers (2-15 GB) to enterprise solutions (unlimited). At typical pricing of $0.023/GB/month, 1 TB costs about $23/month. Understanding KB-MB-GB conversions helps estimate costs: 100,000 photos at 4 MB each = 400 GB ≈ $9.20/month.
1,024 KB in binary (used by operating systems) or 1,000 KB in decimal (used by storage manufacturers). The binary standard is based on powers of 2 (2¹⁰ = 1,024), while decimal uses powers of 10.
1,024 MB in binary or 1,000 MB in decimal. A 1 GB RAM module contains exactly 1,073,741,824 bytes (binary). A "1 GB" cloud storage plan may offer 1,000,000,000 bytes (decimal).
Computers work in powers of 2, so 1 KB was defined as 2¹⁰ = 1,024 bytes. Storage manufacturers adopted the decimal definition (1,000) because it yields larger-seeming numbers. The IEC created KiB/MiB/GiB to clarify, but the confusion persists.
Divide the file size (in bits, multiply bytes by 8) by your connection speed (in bits per second). A 100 MB file on a 50 Mbps connection: 800,000,000 bits ÷ 50,000,000 bps = 16 seconds. Real-world speeds include overhead, so add ~10%.
Mbps = megabits per second (network speed), MB/s = megabytes per second (file transfer rate). 1 MB/s = 8 Mbps. A 100 Mbps connection downloads at about 12.5 MB/s maximum.
At an average of 4 MB per photo: 10,000 × 4 MB = 40,000 MB ≈ 39 GB (binary) or 40 GB (decimal). For RAW photos at 25 MB each, you would need about 244 GB.