Deterministic web tools

Scientific data and bioinformatics utilities for validation, analysis, and preprocessing

Use browser-based tools for FASTA/FASTQ validation, sequence statistics, GC content, reverse complements, format conversion, structured scientific data checks and more. No installation, no account, and no hidden transformations.

Browse tools Try Sequence stats
DeterministicExplicit inputs, predictable outputs
Bioinformatics-readyFASTA, FASTQ, DNA, RNA, and protein sequence utilities
No installationRun focused checks directly in the browser
Featured analysis tool

Sequence stats summarizes records, lengths, N50/N90, GC%, and per-sequence values, then lets you explore the length distribution with filterable plots and table exports.

Open Sequence statsRead metric definitions
Length distributionInteractive histogram and cumulative N50/N90
Full
Filter by ID/lengthExport CSV/SVG/PNG
Sequence length histogram
1,00514,573
Cumulative length distribution
N50N90
Start with a common task

Popular scientific data tools

View all tools
StatisticsSequence stats

FASTA/FASTQ counts, length distributions, N50/N90, and GC%.

TransformReverse complement

Reverse-complement DNA sequences with FASTA and IUPAC support.

CompositionGC sliding window

Calculate positional GC% across DNA or RNA sequences and export CSV.

InteractiveORF finder

Map ORFs by strand and frame, inspect selected FASTA, and export tables.

What the site is for

Focused utilities for inspection, validation, and preprocessing

SciDataUtils is built for practical scientific and bioinformatics work: checking whether files are valid, summarizing sequence content, converting formats safely, exploring metrics, and creating clean exports for downstream use.

Validate file structure, including FASTA, FASTQ, and related text formats
Compute sequence statistics, nucleotide composition, GC%, and interactive ORF maps
Run deterministic conversions, wrappers, filters, splitters, and extractors
Export clean text, FASTA, CSV, TSV, ZIP, or report outputs where relevant
Learn and verify

Standalone references for scientific data formats and metrics

Use the reference section as an independent guide to file formats, sequence alphabets, FASTQ quality scores, and common bioinformatics metrics. Tool pages include their own task-specific instructions.

Browse referenceBrowse tools
FASTA and FASTQ formatsSequence alphabetsFASTQ quality scoresSequence statistics and N50
Need help running an analysis?

Bioinformatics analyses when local setup is the bottleneck

For larger datasets, unfamiliar tools, missing local setup, limited compute resources, or broader analysis scopes, request a scoped bioinformatics analysis. The first step is defining the task, data type, approximate size, and expected deliverables.

Request custom analysis